title: Type of pre-treatment income and response to treatment in methadone maintenance.
mesh_terms: D003625:Data Collection; D004651:Employment; D006801:Humans; D007182:Income; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D010343:Patient Admission / Q000191:economics; D011153:Population; D012940:Social Problems; D013375:Substance Withdrawal Syndrome / Q000534:rehabilitation*; D013997:Time Factors
chemical_list: D008691:Methadone